Expired Canadian patentCanada
Amidino and guanidino substituted inhibitors of trypsin-like enzymes
CA 2200192 C · Owner: Feng, Zixia · Inventors: Feng, Zixia; Kettner, Charles Adrian; Fevig, John Matthew
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to Novel .alpha.-aminoacid and .alpha.-aminoboronic acid and corresponding peptide analogs of formula (I).
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 24, 1995 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 24, 1995
GrantedJanuary 16, 2001
Term endedOctober 24, 2015
Patent numberCA 2200192 C
Classification (IPC)C07K5/08 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.